Blurry Vision, Eyestrain, Double Vision, and/or HeadachesConvergence Insufficiency (CI) is the leading cause of blurry vision, eyestrain, double vision, and/or headaches (including with near vision). Patients should be aware that convergence insufficiency is a fairly common visual condition and that treatment is very effective.

Convergence Insufficiency (CI) and Reading ProblemsConvergence insufficiency can interfere with the ability to read, learn, and work at near (at close distances). This article by an eye doctor explains how and
why CI causes reading and
learning problems. See the illustrations!

Dyslexia and VisionThe American Academy of Optometrists and the
American Optometric Organization discuss vision, learning-related
vision problems, and dyslexia.

Eye Muscle
Surgery for Lazy Eye and StrabismusAnswers to the most frequently asked questions
regarding eye muscle surgery as a treatment for lazy eye, crossed
eyes, etc. This type of surgery is frequently done, but often does
not give satisfactory results.

COVD -- The
College of Optometrists in Vision Development
An international professional optometric organization which
grants board certification in Vision Therapy to optometrists (FCOVD)

AOA -- The
American Optometric Association
The American Optometric Association represents approximately 36,000 doctors of optometry, optometry students and paraoptometric assistants and technicians. Doctors of optometry provide two-thirds of all primary eye care in the United States.